fix: Optimise cookie setting flow

[siddhsuresh]

Closes: ?

What are the changes and their implications?

Bug Checklist

• Changeset added (run pnpm changeset in the root directory)
• Integration test added (see test docs if needed)

Feature Checklist

• Changeset added (run pnpm changeset in the root directory)
• Integration test added (see test docs if needed)
• Documentation added/updated (submit PR to blitzjs.com repo main branch)

[changeset-bot]

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Latest commit: 5366222

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